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lawyer [7]
3 years ago
8

Erica solved the equation −5x − 25 = 78; her work is shown below. Identify the error and where it was made. −5x − 25 = 78 Step 1

: −5x − 25 − 25 = 78 − 25 Step 2: −5x = 53 Step 3: negative five times x over negative five = fifty-three over negative five Step 4: x = negative fifty-three over five
Mathematics
2 answers:
Mkey [24]3 years ago
7 0

Answer:

She shoulda added by 25 not subtracted hope this helps

please make brainliest.

Step-by-step explanation:


7nadin3 [17]3 years ago
6 0

Answer:

she should have added 25, not subtracted 25

Step-by-step explanation:


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A triangle has angles measuring 2x°, x° and x°. Write an equation that can be solved to find the value of x. Then, find the meas
Readme [11.4K]

Answer:

The three angles of a triangles are 90° , 45°, 45°

∠A =  90° , ∠B = 45° and ∠C = 45°

Step-by-step explanation:

<u>Explanation</u>:-

<u><em>Step(i)</em></u>:-

The sum of measures of three angles of any triangle is equal to 180°

<em>Let A , B , C be the  angles of the triangle.</em>

<em>∠A +∠B +∠C = 180°</em>

Given data a triangle has angles measuring 2x°, x° and x°

<em>2x°+ x° + x° = 180°</em>

<em>4x° = 180</em>

<em>x° = </em>\frac{180}{4} = 45<em />

x = 45°

<em><u>Step (ii)</u></em><u>:-</u>

Given data  2x = 2 × 45 = 90°

                      x = 45°

and                x = 45°

The three angles of a triangles are 90° , 45°, 45°

∠A =  90° , ∠B = 45° and ∠C = 45°

<u>Final answer</u>:-

The three angles of a triangles are 90° , 45°, 45°

∠A =  90° , ∠B = 45° and ∠C = 45°

<u></u>

<u></u>

3 0
3 years ago
What percent is rquivalent to 12/30
iren [92.7K]

Answer:

Step-by-step explanation:

12/30 = 0.4

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4 0
3 years ago
Read 2 more answers
3. A clothing manufacturing company makes two types of jogging pants, design A and design B. the design A jogging pants sells to
andriy [413]

Answer:

z(max) =  256000  Php

x₁ = 10

x₂ = 110

Step-by-step explanation:

Jogging pants design                Selling Price       Cost    

weekly production

 Design A    x₁                                     2500            1750

  Design B    x₂                                    2100            1200      

1. z ( function is : )

z = 2500*x₁  +  2100*x₂       to maximize

First constraint weekly production

 x₁    +   x₂    ≤  120

Second constraint Budget

1750*x₁  +  1200*x₂   ≤   150000      

Then the model is

z = 2500*x₁  +  2100*x₂       to maximize

Subject to

 x₁    +   x₂    ≤  120

1750*x₁  +  1200*x₂   ≤   150000  

General constraints   x₁  ≥  0           x₂   ≥ 0            both integers

First table

z           x₁           x₂        s₁       s₂      cte

1       -2500      -2100    0       0         0

0          1              1          1        0  = 120

0      1750         1200     0       1   = 150000

Using AtoZmath online solver and after 6 iterations the solution is:

z(max) =  256000  Php

x₁ = 10

x₂ = 110

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